The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 13, 1999
Filed:
Jun. 23, 1997
Applicant:
Inventor:
Peter J Melling, Sturbridge, MA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
385139 ; 385 12 ; 385902 ;
Abstract
A mid-infrared spectroscopic probe attached to a fiber-optic cable comprises an optically transparent, heat-insulating crystal which is placed between the ATR crystal and the end of the fiber-optic cable so as to provide optical coupling from the cable to the ATR crystal while protecting the fiber-optic assembly inside the cable from excessive heat when the probe is used in high-temperature sample streams. The ATR crystal is tapered outwards towards the sampling end to ensure that pressure from the sample stream, e.g., in a plastics extruder, does not displace the crystal, but rather forces it into tighter contact with the seal in the probe head.